National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Chicago / West Chicago, Dupage Airport (KDPA)

Lat: 41.9°NLon: 88.25°WElev: 758ft.

Fair

67°F

19°C

Humidity 68%
Wind Speed S 7 mph
Barometer 30.05 in (1017.6 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 11 Sep 8:52 am CDT
Extended Forecast for

Saint Charles IL

  • Today

    Today: Sunny, with a high near 80. East southeast wind around 5 mph becoming south in the afternoon. Winds could gust as high as 10 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 63. South southeast wind around 5 mph.

    Low: 63 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 84. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59. West wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 78. North wind around 5 mph, with gusts as high as 10 mph.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers after 1am. Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Sunny, with a high near 80. East southeast wind around 5 mph becoming south in the afternoon. Winds could gust as high as 10 mph.
Tonight
Increasing clouds, with a low around 63. South southeast wind around 5 mph.
Saturday
Mostly sunny, with a high near 84. South wind 5 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Partly cloudy, with a low around 59. West wind around 5 mph becoming north after midnight. Winds could gust as high as 10 mph.
Sunday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 78. North wind around 5 mph, with gusts as high as 10 mph.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 58.
Monday
A 40 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79.
Monday Night
A chance of showers after 1am. Partly cloudy, with a low around 68.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 60.
Wednesday
Showers likely. Mostly cloudy, with a high near 76.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 61.
Thursday
A chance of showers. Partly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles IL
 41.9°N 88.32°W
Last Update:
3:10 am CDT Sep 11, 2026
Forecast Valid:
8am CDT Sep 11, 2026-6pm CDT Sep 17, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation